Added stack trace print for debugging

https://github.com/tastybento/bskyblock/issues/186

src/main/java/us/tastybento/bskyblock/database/BSBDatabase.java

@@ -61,6 +61,7 @@ public class BSBDatabase<T> {
         } catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException
                 | ClassNotFoundException | IntrospectionException e) {
             logger.severe(() -> "Could not load object from database! " + e.getMessage());
+            e.printStackTrace();
         }
         return result;
     }